Results 81 to 90 of about 1,486 (218)

Defective CeO2/Copper Phthalocyanine S‐Scheme Heterojunctions With Molecular Copper Centers for Selective CO2‐To‐CO Photoconversion

open access: yesElectron, EarlyView.
Defective CeO2/CuPc S‐scheme heterojunction featuring oxygen‐vacancy‐rich ceria nanorods and atomically dispersed Cu–N4 molecular centers. Built‐in electric field mediates efficient S‐scheme charge separation, accumulating strongly reductive electrons at copper sites for selective CO2‐to‐CO photoconversion (92.2% selectivity) via *COOH stabilization ...
Sharafat Ali   +12 more
wiley   +1 more source

Multi‐Energy‐Driven Photocatalysis: Mechanism, Progress, and Perspective

open access: yesExploration, EarlyView.
Photocatalysis technology can be utilized in water splitting, carbon dioxide reduction, pollutant degradation, and chemical synthesis. Introducing external energy fields, including thermal energy, electrical energy, magnetic energy, mechanical energy, and microwave energy, has been considered as a promising method to improve photocatalytic performance ...
Liangcheng Xu   +5 more
wiley   +1 more source

Hyperfine interactions at nitrogen interstitial defects in diamond

open access: yes
Diamond has many extreme physical properties and it can be used in a wide range of applications. In particular it is a highly effective particle detection material, where radiation damage is an important consideration.
Goss JP   +4 more
core  

An ab initio study of deep-level defects in silicon

open access: yes, 2000
Theoretical investigations into deep-level defects in crystalline silicon are presented in this thesis. The calculations are carried out using the AIMPRO code, an ab initio pseudopotential local spin density method applied to large hydrogen terminated ...
Ferreira-Resende, A.L.S.
core  

Flexomagnetism and vertically graded Néel temperature of antiferromagnetic Cr2O3 thin films. [PDF]

open access: yesNat Commun, 2022
Makushko P   +20 more
europepmc   +1 more source

Recent Progress on Graphitic Carbon Nitride–Based Photocatalysts for Hydrogen Peroxide Synthesis

open access: yesExploration, EarlyView.
This review summarizes recent progress in using graphitic carbon nitride (g‐C3N4) photocatalysts to produce hydrogen peroxide (H2O2). It highlights how solar energy can cleanly convert water and oxygen into this valuable chemical. We discuss key modification strategies, such as defect engineering, doping, and junction construction, to enhance ...
Liangpang Xu, Xixian Nan, Jimmy C. Yu
wiley   +1 more source

Further applications of magnetic resonance

open access: yes, 1959
The electron and nuclear magnetic resonance techniques are now well established and are extensively applied to the investigation of the solid state. We are at present largely concerned with the investigation of defect sites in ionic crystals which are ...

core  

Understanding the Key Role and Evaluation Methods of Sodium Storage Behavior/Mechanisms for Hard Carbon Anode

open access: yesInformation &Functional Materials, EarlyView.
By integrating various characterization and electrochemical techniques, this review emphasizes the importance of elucidating these mechanisms. Analysis of the sodium storage behavior in specific carbon materials further underscores the vital significance of such mechanistic research.
Wenjie Huang   +4 more
wiley   +1 more source

Rôle des dopants, O2 interstitiel et de la température dans les effets de l'irradiation sur les fibres optiques à base de silice

open access: yes, 2015
In this Thesis work we have investigated the effect of ionizing irradiation (X and γ rays) up to 1 Grad on different types of multimode optical fibers (P-doped, P-Ce-doped , Ge-doped, Ge-F-doped, Ge-Ce-doped, and N-doped).
Di Francesca, Diego
core  

Reversible Dual‐Mode X‐Ray Memory Imaging of Photochromic Zero‐Dimensional Halide Perovskite Glass

open access: yesInformation &Functional Materials, EarlyView.
A photochromic halide perovskite glass with embedded Cs4PbBr6 nanocrystals enables reversible X‐ray–induced coloration and luminescence modulation, realizing dual‐mode X‐ray memory imaging with visual and photoluminescent readout. ABSTRACT Integrating photochromic and photoluminescence (PL) properties of halide perovskite glasses enables reversible ...
Yang Ci   +13 more
wiley   +1 more source

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